Optical method of atomic ordering estimation

It is well known that within metal-organic vapor-phase epitaxy (MOVPE) grown semiconductor III-V ternary alloys atomically ordered regions are spontaneously formed during the epitaxial growth. This ordering leads to bandgap reduction and to valence bands splitting, and therefore to anisotropy of the...

Full description

Saved in:
Bibliographic Details
Main Authors: Prutskij, T, Attolini, G, Lantratov, V, Kalyuzhnyy, N
Format: Conference Proceeding
Language:English
Subjects:
ALLOYS
ANISOTROPY
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
DETECTION
Emission
Epitaxial growth
Metalorganic chemical vapor deposition
PHOTOLUMINESCENCE
POLARIZATION
QUATERNARY ALLOY SYSTEMS
Quaternary alloys
SEMICONDUCTOR MATERIALS
TERNARY ALLOY SYSTEMS
Ternary alloys
VAPOR PHASE EPITAXY
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:It is well known that within metal-organic vapor-phase epitaxy (MOVPE) grown semiconductor III-V ternary alloys atomically ordered regions are spontaneously formed during the epitaxial growth. This ordering leads to bandgap reduction and to valence bands splitting, and therefore to anisotropy of the photoluminescence (PL) emission polarization. The same phenomenon occurs within quaternary semiconductor alloys. While the ordering in ternary alloys is widely studied, for quaternaries there have been only a few detailed experimental studies of it, probably because of the absence of appropriate methods of its detection. Here we propose an optical method to reveal atomic ordering within quaternary alloys by measuring the PL emission polarization.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4848491